Running an exit to call on external program

运行一个已经存在的调用外部程序；

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Like passthru , it outputs anything it receives directly from the external program.

它像passthru一样直接输出从外部程序接收到的任何东西。

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The passthru() command lets you run an external program and display its results on the screen.

passthru() 允许您运行外部程序，并在屏幕上显示结果。

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What if companies jumped into game dynamics, not for an external marketing program but as a means to motivate their internal workforce towards sustainability goals?

FORBES: Gaming for Corporate Social Good

In collaboration with other external organizations, one of the program's key goals is to search and hopefully mitigate potential NEO impacts on Earth.

ENGADGET: PSA: Asteroid 2012 DA14 will pass the Earth at 2:00pm ET Alt

Yet the chief reason they campaign for a measured U.S. buck-weakening program is to "correct" our growing external deficit and avoid a dollar crash and financial market chaos.

FORBES: No Greenback Crash